Bork Havn, Ribe and Hedeby/ Haithabu. And more recent we found them at Viking invasion of Teylingen.
So they’re not that hard to find. That said: I am Dutch. And Dutch people don’t easily part with their money. Do you know they ask a whopping € 10 for a bone needle? For a tiny piece of the metatarsus of a cow? It's robbery! Then again, they are Vikings after all... So instead, we bought a piece of bone for a mere € 2. And it's got multiple needles inside! All we need to do is free the needle from excess material.
Here is me, freeing the needle from the bone fragment. I cut a piece of 2-3 mm thick from the bone fragment and cut that diagonally with the jigsaw. The process of sawing in a piece of dead cow produces a very specific and recognizable smell.
I now have to strips of bone that are kind-of needle shaped. There is still some excess material that needs to be removed.
I Flatten the needle with a file.
Drill a hole and elongate it.
Finally some sandpaper to make it smooth.
Now all I need to do is to learn how to bind yarn with the needle.